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Genrish500 [490]
2 years ago
14

Select the correct answer.

Mathematics
2 answers:
erastovalidia [21]2 years ago
7 0

Answer:

here

Step-by-step explanation:

Elis [28]2 years ago
7 0

Answer:

Yes you are correct. It is x^4/21 or C.

Step-by-step explanation:

x^-2/3 • x^6/7

x^ -2/3 + 6/7

x^ 7(-2) + 3•6 / 3•7

x^ -7 •2 + 18 / 3•7

x^ -14 + 18 / 3•7

x^ 4 / 3•7

x^ 4/21

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What is 32 / 10 equal
kupik [55]

Answer:

3.2. The decimal point moves left once because there's only one 0

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is value of x and y if<br> Y=-2x+8 and Y=3x-7
iren [92.7K]

Answer:

X=5 y=-2

Step-by-step explanation:

Set them equal to each other so...

-2x+8=3x-7

Simplify by balancing out the equation so

-5x=-1

So x=5

Now plug it into either y equation

-2(5)+8

-10+8

Y=-2

Hope this helps!

3 0
3 years ago
18+6/-4-16 HELP only d part​
Ivahew [28]

Answer:

\frac{1}{2} is the answer

Step-by-step explanation:

First we need to substitute X and Y with their respective numbers

3\cdot \:6+\frac{6}{-4}-\left(-4\right)^2

Then, following PEMDAS, We just need to simplify

18+\frac{6}{-4} -16

16.5-16=0.5=\frac{1}{2}

3 0
2 years ago
Read 2 more answers
A bag contains 105 red and blue marbles. The ratio of red to blue marbles is 2:5. How many red marbles are in the bag?
V125BC [204]

Answer:

30 red marbles

Step-by-step explanation:

If the ratio is 2 red marbles for every 5 blue marbles then you would add them together to find out how many marbles are in one group.

2+5=7

There are 7 marbles in each group.

Now we have to find out how many total groups there are by dividing the total amount of marbles by the amount in each group.

105÷7=15

There are 15 groups of 7 marbles.

Looking back at the ratio, we know that the 15 groups each have 2 red marbles and 5 blue marbles. So if there is 2 red marbles 15 times (2 marbles in 15 groups) we would multiply.

2×15=30

There are 30 red marbles.

I hope that makes sense.

5 0
3 years ago
I need help please and please explain your answer.
lesya692 [45]

Answer:

I think it is B or D

actually it is B i got 100%

Step-by-step explanation:

6 0
3 years ago
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